System.Collections.IEnumerator se;
FarPoint.Win.Spread.Model.ICustomNameSupport cns;
cns = (FarPoint.Win.Spread.Model.ICustomNameSupport)fpSpread1.ActiveSheet.Models.Data;
cns.AddCustomName("ALPHA", "SUM(A1,A2)", 1, 1);
cns.AddCustomName("GAMMA", "A1*A2", 2, 2);
fpSpread1.ActiveSheet.SetFormula(1, 1, "ALPHA");
fpSpread1.ActiveSheet.SetFormula(2, 2, "GAMMA");
fpSpread1.ActiveSheet.SetValue(0, 0, 10);
fpSpread1.ActiveSheet.SetValue(1, 0, 10);
se = cns.GetCustomNameEnumerator();
listBox1.Items.AddRange(new Object[] {se.MoveNext().ToString(), se.Current.ToString(), se.MoveNext().ToString(), se.Current.ToString()});